Scale-beam



(No Model.)

A. E. SMITH.

SCALE BEAM. No. 381,087. Patented Apr. 10, 1888.

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PL PUERs, Pholu-Lvmagraphcr, Washing'crk D. C

PATENT OFFICE.

ALBERT H. SMITH, OF MEMPHIS, TENNESSEE.

SCALE- SPBCIFICATION forming part of Letters BEAM.

Patent No. 381,087, dated April 10,1888.

Application filed December 12, 1887. Serial No. 157,615. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT H. SMITH, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Ten nessee, have invented certain new and useful Improvements in Scale-Beams; and I do declare the following to be a full, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to scale-beams; and its object is to improve the methods of balancing common to such beams.

In the accompanying drawings,wherein like letters represent like parts, Figure 1 is a longitudinal perspective of my scale-beam with the end poise in section; Fig. 2, a cross-section on the line X X of Fig. l; and Fig. 3 an enlarged view, partly in section, of the butt of the beam.

A is a scale beam of ordinary construction, but provided with aslot, a, formed longitudinally in the butt thereof. In this slot rests and moves a poise, B, which, for convenience of construction, is made in two parts, provided with corresponding lugs, Z), one of which contains a threaded screw-seat, 1,while an eye, I), completely pierces the other part of the poise. By means of this construction the poise may be fitted to the beam and held together by a suitable screw. The lugs b I) being shorter than the slot to, end-play is allowed to the poise.

In the edge of the butt, and preferably the under edge, I form an eye, ct,with an annular seat therein and a spiral thread, and through this eye I pass a flat'ended screw-bolt, G, which looks the poise in place when adjusted longitudinally in the slot. The head of this bolt may be formed to any desired shape, so as to be fitted by a special key whenever the beam is to be balanced,adj usted, inspected,or sealed.

To increase the weighing capacity of the beam, I provide an additional poise, D, provided wit-h a chamber, (Z, which poise fits the end of the beam.

I claim as follows:

1. A scalefor weighing, the several and cooperating parts of which consist of the beam A, having aslot, a, and an eye, a, the poise B, having lugs I) b, a screwseat, l, and an eye, I),

the bolt 0, and the poise D, havingachamber,

d, all as hereinbefore described, for the purposes of balancing, locking, and increasing the weighing-power of said scale, as hereinbefore set forth.

2. The combination of a scale-beam, as A, having a slot, as a, and an eye, a, with the poise 13, moving longitudinally in said slot, and the bolt 0, in the manner described, for the purpose of assuring a true balance of the beam.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT H. SMITH.

-Witnesses:

WM. FINNIE, E. M. DURHAM. 

